jones



(No Model.) v

I; L. HYDB'Sv C. H. JONES.

SBGTIONAL LADDER.

Pate'ntedNov. 29, 1887.

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UNITED STATES PATENT OFFICE..

IRA L. HYDE AND CLARENCE H. JONES, OF OHAZY, NEW YORK; SAID l HYDE ASSIGNOR TO SAlD JONES.

SECTIONAL LADDER.

SPECIFICATION forming part of Letters Patent No. 374,154. dated November 29. 1887.

Application filed October 5, 1886. Serial No. 25,387.

To all whom, it may concern.-

Be it known that we, IEA L. HYDE and CLARENCE H. JoNEs, citizens of the United States, residing at Chazy, Vin the county of Clinton and State of New York,have invented a new and useful Improvement in Sectional Ladders, of which the following is so full, clear, and exact a description as will enable others skilled in the art to which our invention appertains to make and use the same, reference being had to the accompanying drawings, in Whichi Figure lis a front elevation of our improved 1adder,showing the two sections locked firmly in position. Fig. 2 is a .side elevation of the same, showingv the rounds in cross-section. Fig. 3 is a front elevation of a part of our sectional ladder, showing aportion broken away around the pivotal points of the locking-pin. Fig. 4 is a detail view of one of the folding arms. Fig. 5 is a side view of a portion of one of the sections. Fig. 6 is a detail view of the docking-round. Fig. 7 shows the upper section of our sectional ladder provided with a hook. Fig. Sis a front elevation of the same. Figs. 9 and l0 are modifications showing the slot in the folding splice-pieces extending in opposite directions.'

rlhe object of our invention is to provide a. ladder in sections which may be readily and quickly secured together to convert the several sections into a long ladder.

Another object of our invention is to construct a ladder which, when it is put up, will not be likely to become accidentally separated where the sections are joined together. Another object of ourinvention is to provide the splice-pieces with means for preventing them from being forced too far toward the center, and thus accidentally broken oft.

The objects generally of our invention are to construct a complete and practical sectional ladder; and the invention consists in the construction, combination, and arrangement of parts, as will be hereinafter fully explained, and particularly pointed out in the claims at the end of the specification.

The main side pieces are designated by the letters A A, each of which is provided with the splice-pieces B B,having the recesses B in (No model.)

their outer free ends. These pieces are pivoted loosely at b to the round which comes next the top in the section to'which the splicepieces are pivoted.

Each of the splice-pieces B B is provided with a pin,b,which is adapted to engage with the recesses c and c in the main sides of the ladder, respectively.

The locking-round C is provided with an eX- tension, C', wliich extends oft to one side of the central line of the locl ingpin,as is clearly shown in Figs. 3 and 6.

Each of the splice-pieces B B is provided with a slot, D, through which the lockinground works during the operation of detach-l ing the sections from each other,when it is desired to take the ladder to pieces. At the upper end of one of the sections we providea hook, E, which is adapted to extend over the weather-boards on the top of the building when the ladder is used on a roof.

In order to prevent accidental displacement of the locking-roller O,We provideawedge,F, which is secured to the side of the ladderby a chain, f. This wedge is adapted to be inserted in the slot D, just above the extended portion C of the locking-round C, after the locking-round has been turned roundin a position to lock the sections together. X Xdesignates the point where the ends of the main sections of the ladder meet.

In Figs. 9 and 10 we show modifications of the splice-pieces B, and show the slots extending at an angle to the line of the sides of the splice`pieces,so that the liability of accidental displacement of the splice -pieces will be greatly lessened.

The operation of our device is as follows: When it is desired to place the ladder in position for use, the splice-pieces are pressed toward the main sections until the pins b b engage lirmly with the recesses c and c on the main sections. The locking-key is next turned around until the extension C faces the round of the ladder to which the splice-pieces are pivoted, and the wedge F being fitted into the slot D the device is locked firmly in position against accidental displacement. When it is desired to unlock the sections, the wedge F is taken out and the locking-key turned around IOO until the extension C on the same faces the pins Z1' b', when thesplice-pieces can be disengaged from the recesses c and c by slipping the splice-pieces toward each other through the medium of the slot D.

What We therefore desire to secure by Letters Patent, and What we therefore claim, is-

l. The combination of the sections, the splicepieees7 and the locking-round with th'e Wedge for holding the locking-round in posltion, substantially as described.

2. The combination of the sections provided with the splice-pieces and with the lockinground, the wedge, and the chain, substantially as described.

In testimony that We claim the above We hereunto set our hands and affix our seals in the presence of two subscribing Witnesses.

IRA L. HYJE.

L. S. CLARENCE H. JONES. s]

Vitnesses:

I. W. HUBBELL, J. S. J oNEs. 

